Federal Reserve Bank of St. Louis President James Bullard said he’s concerned about inflation and that he’d like to continue the current pace of bond purchases.

“My own forecast is that it would be a little closer to target by now, so I am a little bit nervous about the fact that inflation has been low and has been trending down,” Bullard said in London.

“I would like to get some reassurance from the data that it’s going to turn around and go back toward target before we start tapering” purchases.

Fed Chairman Ben S. Bernanke said the U.S. economy remains hampered by high unemployment and government spending cuts, and raising interest rates or reducing asset purchases too soon would endanger the recovery. Bullard, a voting member of the Federal Open Market Committee this year, said earlier this month that the Fed should keep up bond buying because it’s the best option for boosting growth.

In response to audience questions at an event hosted by the Official Monetary and Financial Institutions Forum, Bullard said any decision to taper the pace of quantitative easing “does depend on the data.” He added that labor markets “have been improving.”

In prepared remarks at the event, Bullard said the Fed should “continue with the present quantitative easing program, adjusting the rate of purchases appropriately in view of incoming data on both real economic performance and inflation.”

Fed officials are debating how to eventually curtail asset purchases that have swollen its balance sheet to a record $3.35 trillion. The FOMC agreed May 1 to maintain buying $85 billion in Treasurys and mortgage bonds per month to boost employment.

The FOMC said that day that it is prepared to accelerate or slow monthly purchases of $40 billion a month in mortgage securities and $45 billion of Treasurys in response to changes in the labor market and inflation. It also left unchanged its statement that it plans to hold its target interest rate near zero as long as unemployment remains above 6.5 percent and the outlook for inflation doesn’t exceed 2.5 percent.

The traditional effects of easier monetary policy include higher inflation expectations, currency depreciation, higher equity valuations and lower real interest rates, according to the policy maker. “All of these have been associated with quantitative easing in the U.S.,” he said.